Fig. 4From: Development and clinical assessment of new objective adherence markers for four microbicide delivery systems used in HIV prevention studiesUsing objective markers to assess IVR use in the CONRAD 135 Study. Twenty women used one IVR per time point. Glycerin (top) and penetrated bioanalytes (bottom) were measured in separate extracts, each representing one-quarter of an IVR. Glycerin and bioanalytes levels were significantly different among all time points. N = 20; *p < 0.0001, 1 day vs. 7 and 30 days, **p < 0.0001, 7 days vs. 30 daysBack to article page